1. A microfacet-based BRDF generator
2. Chen W.-C. Bouguet J.-Y. Chu M. H. and Grzeszczuk R. 2002. Light field mapping: efficient representation and hardware rendering of surface light fields. In ACM Transactions on Graphics (SIGGRAPH 2002). 10.1145/566654.566601 Chen W.-C. Bouguet J.-Y. Chu M. H. and Grzeszczuk R. 2002. Light field mapping: efficient representation and hardware rendering of surface light fields. In ACM Transactions on Graphics (SIGGRAPH 2002). 10.1145/566654.566601
3. Shade trees
4. Reflectance and texture of real-world surfaces